mod: 图片预览

lib/pages/preview/controller.dart

@@ -0,0 +1,77 @@
+import 'dart:io';
+
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:get/get.dart';
+import 'dart:typed_data';
+import 'package:dio/dio.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:image_gallery_saver/image_gallery_saver.dart';
+import 'package:pilipala/utils/utils.dart';
+import 'package:share_plus/share_plus.dart';
+
+class PreviewController extends GetxController {
+  DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
+  RxInt initialPage = 0.obs;
+  RxInt currentPage = 1.obs;
+  RxList imgList = [].obs;
+  bool storage = true;
+  bool videos = true;
+  bool photos = true;
+  bool visiable = true;
+
+  @override
+  void onInit() {
+    super.onInit();
+    if (Get.arguments != null) {
+      initialPage.value = Get.arguments['initialPage']!;
+      currentPage.value = Get.arguments['initialPage']! + 1;
+      imgList.value = Get.arguments['imgList'];
+    }
+  }
+
+  requestPermission() async {
+    Map<Permission, PermissionStatus> statuses = await [
+      Permission.storage,
+      // Permission.photos
+    ].request();
+
+    final info = statuses[Permission.storage].toString();
+    // final photosInfo = statuses[Permission.photos].toString();
+
+    print('授权状态：$info');
+  }
+
+  // 图片保存
+  void onSaveImg() async {
+    var response = await Dio().get(imgList[initialPage.value],
+        options: Options(responseType: ResponseType.bytes));
+    final result = await ImageGallerySaver.saveImage(
+        Uint8List.fromList(response.data),
+        quality: 100,
+        name: "pic_vvex${DateTime.now().toString().split('-').join()}");
+    if (result != null) {
+      if (result['isSuccess']) {
+        print('已保存到相册');
+      }
+    }
+  }
+
+  // 图片分享
+  void onShareImg() async {
+    requestPermission();
+    var response = await Dio().get(imgList[initialPage.value],
+        options: Options(responseType: ResponseType.bytes));
+    final temp = await getTemporaryDirectory();
+    String imgName =
+        "pic_vvex${DateTime.now().toString().split('-').join()}.jpg";
+    var path = '${temp.path}/$imgName';
+    File(path).writeAsBytesSync(response.data);
+    Share.shareXFiles([XFile(path)], subject: imgList[initialPage.value]);
+  }
+
+  // 浏览器中查看
+  void onBrowserImg() async {
+    Utils.openURL(imgList[initialPage.value]);
+  }
+}